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Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Salish Sea

Harlequin – Residency

17th sighting in Salish Sea
Fluke of Harlequin
Harlequin Confirmed in the catalog @28211
Jun 21 – Sep 12, 2026 · Salish Sea

Green Water, Full Season

Herring, trees close enough to smell, and every day worth surfacing for.

131 m
Deepest dive
4:44
Longest dive
112
Dives
Sightings
9
Days between first and last sighting
83

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 21, 202682 m14.6°C46 m
Jul 1, 202631 m12.8°C20 m
Jul 3, 2026240 m13.1°C49 m
Jul 9, 202625 m16.0°C20 m
Jul 10, 2026181 m13.6°C88 m
Jul 12, 202652 m14.1°C40 m
Jul 23, 2026251 m18.1°C131 m
Jul 27, 2026129 m15.1°C92 m
Sep 12, 2026252 m—109 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Jun 21, 2026 — seafloor 82 m (measured), deepest dive 46 m (modelled)Jun 21Jul 1, 2026 — seafloor 31 m (measured), deepest dive 20 m (modelled)Jul 1Jul 3, 2026 — seafloor 240 m (measured), deepest dive 49 m (modelled)Jul 3Jul 9, 2026 — seafloor 25 m (measured), deepest dive 20 m (modelled)Jul 9Jul 10, 2026 — seafloor 181 m (measured), deepest dive 88 m (modelled)Jul 10Jul 12, 2026 — seafloor 52 m (measured), deepest dive 40 m (modelled)Jul 12Jul 23, 2026 — seafloor 251 m (measured), deepest dive 131 m (modelled)Jul 23Jul 27, 2026 — seafloor 129 m (measured), deepest dive 92 m (modelled)Jul 27Sep 12, 2026 — seafloor 252 m (measured), deepest dive 109 m (modelled)Sep 12

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

131 m
Deepest dive
4:44
Longest dive
112
Dives
25 m
Avg dive depth
9
Sightings
83
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150131 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (251 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Jul 23, 2026

measured
Seafloor depth
251 m
Sea-surface temperature
18.1°C
Distance from shore
4.0 km

Across the residency · 9 sightings

measured
Seafloor depth
25 m – 252 m
Sea-surface temperature
12.8°C – 18.1°C
Distance from shore
1.0 km – 6.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 9 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.